as

Portable GNU assembler. Primarily intended to assemble output from gcc to be used by ld. More information: https://www.unix.com/man-page/osx/1/as/.

• Assemble a file, writing the output to a.out:
  as {{path/to/file.s}}
• Assemble the output to a given file:
  as {{path/to/file.s}} -o {{path/to/output_file.o}}
• Generate output faster by skipping whitespace and comment preprocessing. (Should only be used for trusted compilers):
  as -f {{path/to/file.s}}
• Include a given path to the list of directories to search for files specified in .include directives:
  as -I {{path/to/directory}} {{path/to/file.s}}